Grandpas Old Tool Box

So I finally pulled out my great grandpas tool box from my grandmas barn and want to get it cleaned up but I would like some opinions on how to go about it. I am going to say that this is probably from the 1930’s or 1940’s. The tills had some finish nails and glazing points, so this was his tool box for finish carpentry. He was a general carpenter that later started his own general contracting business and built schools in the 1950’s and 1960’s in Norther Indiana and ...